import logging

from rest_framework import status
from rest_framework.response import Response
from rest_framework.views import exception_handler as drf_exception_hander
from django.db import DatabaseError
from redis import RedisError


# 获取在配置文件中定义的logger，用来记录日志
logger = logging.getLogger('django');


def exception_handler(exc, context):
    """
    自定义异常处理
    :param exc:异常
    :param context:批量异常的上下文
    :return: Response响应对象
    """
    response = drf_exception_hander(exc, context)

    if response is None:
        view = context['view']
        if isinstance(exc, DatabaseError) or isinstance(exc, RedisError):
            # 数据库异
            logger.error('[%s] %s' % (view, exc))
            response = Response({"message", "服务器内部错误"}, status=status.HTTP_507_INSUFFICIENT_STORAGE)

    return response
